Depends on your TV's deinterlacer and scaler. Some handle it beautifully, some don't.
At the risk of sounding super millennial, I decided even FioS in Manhattan doesn't give decent picture quality. I cut the cord and grabbed an apple TV plus FuboTV and am much happier. Some sports are broadcast at 60fps through that app too. It's great.
Strongly doubt this.
My 65" HDR10/Dolby Vision TV begs to differ :-P.